<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Scatter 3D - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="js/commonUI.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'));

            $.getJSON('./data/population.json', function (data) {

                data = data.filter(function (dataItem) {
                    return dataItem[2] > 0;
                }).map(function (dataItem) {
                    return [dataItem[0], dataItem[1], Math.sqrt(dataItem[2])];
                });

                chart.setOption({
                    globe: {
                        baseColor: 'rgba(0,0,40,0.2)',
                        globeOuterRadius: 120
                        // viewControl: {
                        //     autoRotate: false
                        // }
                    },
                    visualMap: {
                        max: 40,
                        calculable: true,
                        realtime: false,
                        inRange: {
                            colorLightness: [0.05, 0.9]
                        },
                        outOfRange: {
                            colorAlpha: 0
                        }
                    },
                    series: [{
                        type: 'scatter3D',
                        coordinateSystem: 'globe',
                        data: data,
                        silent: true,
                        symbolSize: 4,
                        blendMode: 'lighter',
                        itemStyle: {
                        }
                    }]
                });
            });

            window.addEventListener('resize', function () {
                chart.resize();
            });

        </script>
    </body>
</html>